# Disconnected mechanical coupling

Canonical URL: https://eloragrid.ai/symbols/iec-disconnected-mechanical-coupling
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: Q021217
Drawing use: Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Disconnected mechanical coupling
Autodesk IEC-60617 Symbol Preview — Mechanical coupling qualifiers; vendor family reference, not certified IEC geometry or database identifier.

This indication identifies the disconnected state of a mechanical coupling.

## What it represents

This indication identifies the disconnected state of a mechanical coupling. The driving and driven elements are represented without an engaged torque or motion-transmission relationship in this state. Either element can still have electrical connections.
Use the state diagram or mechanism schedule to define what causes engagement. The disconnected coupling mark should not be substituted for a power isolation symbol.

## How to read it

- Read the state within the documented mechanism sequence.
- A disconnected coupling state is separate from the isolation of an electrical supply.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- Read the state within the documented mechanism sequence.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

A disconnected coupling state is separate from the isolation of an electrical supply.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: Q021217 (Autodesk token; not a verified IEC database ID)
- Information added: Read the state within the documented mechanism sequence.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [Autodesk IEC-60617 preview: Mechanical coupling qualifiers](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F3E7DE9A-47D1-4C25-BBBE-6C07AA1B3033.htm) — Autodesk. Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.